From ddd0e862cee83bbbf8361f083c07ad2c037d693e Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 1 Feb 2017 23:05:49 +0100
Subject: [PATCH] Properly remember window position.

Querying the position of unmapped windows may or may not return a valid
position. -- the configure handler is also called after hiding a window.
---
 libs/gtkmm2ext/window_proxy.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/gtkmm2ext/window_proxy.cc b/libs/gtkmm2ext/window_proxy.cc
index 1f2fa54112..19917bd99a 100644
--- a/libs/gtkmm2ext/window_proxy.cc
+++ b/libs/gtkmm2ext/window_proxy.cc
@@ -286,6 +286,9 @@ WindowProxy::configure_handler (GdkEventConfigure* ev)
 
 	   the difference is generally down to window manager framing.
 	*/
+	if (!visible() || !_window->is_mapped()) {
+		return false;
+	}
 	save_pos_and_size ();
 	return false;
 }